Sunday, 22 April 2012

the respiratory system's work.

THE RESPIRATORY SYSTEM.When we breathe the first system of our body that works is the respiratory system. There are many gases that we take in our body but when the air comes out from our body there is no oxygen in it. This is why because when we breathe in the air goes through the tractiea to the bronchi the into the lungs. Then inside the lungs the bronchi again is divided into hundreds of parts. And those parts are called boncheolle at the end of them the are some circled parts called alveoli. These alveoli filter the air and send them out again and the oxygen is send through the cappilaries into the blood. THANK YOU By Isha.